Why the headline rates mislead people

Singapore's top band of 24% only bites on income beyond S$320,000. Everything below sits at considerably softer rates, because the system is designed to lean on middle incomes rather than squeeze the top. There is no tax on capital gains, nothing on inheritance, and no annual wealth charge.

Britain's ceiling is 45%, which applies once income passes £125,140 and the personal allowance has disappeared entirely. National Insurance adds 2% on everything above £50,270. There is also the well-known band between £100,000 and £125,140 where the withdrawal of the allowance produces an effective rate of 60%.

Setting 24% against 45% still leaves out a large piece of the Singaporean payslip: CPF, the Central Provident Fund, which looks like a heavy deduction but does something quite different from a tax.

CPF: Singapore's mandatory savings system

CPF behaves like a tax without being one. Workers below 55 hand over 20% of ordinary wages, subject to a monthly wage ceiling of S$7,400, and the employer adds a further 17.5%. Together the two sides can pass 37% of salary.

The difference is where the money lands. British tax and German social contributions disappear into a common pot; CPF flows into three accounts in your own name: Ordinary (housing, education, investment), Special (retirement) and Medisave (healthcare). The balance belongs to you and can be spent on approved purposes, and once you turn 55 anything above the required retirement sum can be withdrawn.

Put plainly, CPF is your money held back for you. Tax is not. Ignore that distinction and any comparison between the two countries falls apart.

Professional salary comparison: UK vs Singapore

Consider someone in finance earning between S$120,000 and S$200,000, which covers a lot of mid and senior finance and tech roles in both cities.

Only income tax has been deducted on the Singapore side, since CPF stays in your name. Even on that conservative basis, the Singaporean professional holds on to far more cash.

Take the S$250,000 and £165,000 line, roughly comparable in purchasing power. Tax alone removes about S$5,750 a month in Singapore, an effective 27.6%. In Britain, income tax plus NI comes to roughly £5,500 a month, an effective 40%. Converted to cash, Singapore ends up ahead by something like S$4,000 to S$5,000 every month.

What Singapore doesn't give you

None of this comes free. Lighter taxation means no NHS equivalent, with hospital bills covered through your Medisave account and private cover filling the remainder. Unemployment support is thin, since the severance framework in place is nothing like British benefits. There is also no state pension paid for by other taxpayers, because your CPF balance is the pension.

If you are young, in good health, unlikely to lean on the NHS and reliable about saving, Singapore wins on nearly every financial measure. If you live with a long-term condition, support dependents, or doubt your own saving habits, the universal cover Britain provides is worth real money.

Housing: Singapore's real sting

Rent claws back part of the tax advantage. Two bedrooms in a central district run from S$4,500 to S$7,000 a month, while something similar in London sits between £2,800 and £4,500.

Once rent is deducted the advantage shrinks, but it survives. Someone on S$200,000 in Singapore paying S$5,500 a month in rent still has more than S$9,000 left after tax and housing. A London counterpart on £140,000 paying £3,500 a month is left with around £5,000. At that income the disposable gap remains roughly 75% to 80% in Singapore's favour.

Who benefits most from the Singapore move?

The numbers point clearly to Singapore for finance staff above S$150,000, for tech roles at companies running their regional or global operations there, and for anyone intending to stay five years or more and build up CPF. That balance grows quickly: on S$200,000 a year you are adding more than S$40,000 annually to CPF on top of the cash you actually spend.

Britain keeps the edge for people who would rather not buy private health cover, for those whose lives are tied into British public services, and for lower earners, where Singaporean living costs swallow the tax saving entirely.